Flora of North America species comparison

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Erythranthe geyeri

Erythranthe cordata

Geyer's monkeyflower, mimule de James

tinytooter monkeyflower
Habit Perennials, rhizomatous, rooting at nodes. Annuals, fibrous-rooted, sometimes producing leafy runners from basal nodes, stems often rooting at proximal nodes and appearing rhizomelike.
Stems

decumbent-ascending to ascending or erect-ascending, branched, (3–)10–40 cm, glabrous.

usually erect, usually simple, usually fistulose, 12–40(–100) cm, sparsely stipitate-glandular, hairs fine, gland-tipped.
Leaves

cauline, basal not persistent;

petiole 3–10(–20) mm or 0 mm distally;

blade palmately 3–5-veined, suborbicular to depressed-ovate or broadly elliptic-ovate to reniform, 6–25 mm, relatively even-sized or largest often at mid stem, bracteal reduced, base cuneate to truncate or subcordate, margins shallowly dentate to crenate-dentate, teeth 3–7(–10) per side, apex rounded, adaxial surface of distals sparsely short villous-glandular or glabrous.

basal and cauline, basal persistent;

petiole: basal and proximals 6–20(–40) mm, midcauline to distals 0 mm;

blade not connate, palmately 3–5(–7)-veined, orbicular to broadly elliptic-ovate or oblong-elliptic, cauline becoming broadly ovate to narrowly reniform, basal and mid cauline 15–30(–50) mm, gradually reduced in size distally to 6 mm, basal largest, distal closely paired, auriculate-subclasping, base cuneate to truncate or shallowly cordate, margins shallowly, evenly to unevenly dentate, apex obtuse to rounded, surfaces glabrous.
Flowers

plesiogamous, 2–8(–12), from distal nodes, sometimes from most nodes, very loosely racemose.

plesiogamous, (5–)10–16, at distal nodes, in bracteate racemes, chasmogamous or cleistogamous.
Styles

glabrous.

glabrous.
Corollas

yellow, sparsely red-dotted or not, bilaterally symmetric, weakly bilabiate;

tube-throat cylindric-funnelform, 6–8 mm, exserted 1–3 mm beyond calyx margin;

limb expanded 5–8 mm.

yellow, red-spotted, abaxial limb deeper yellow, weakly bilaterally or radially symmetric, weakly bilabiate or regular;

tube-throat sometimes tubular and not opening (cleistogamous), 8–14 mm, exserted 1–3 mm beyond calyx margin;

limb not expanded or expanded 9–14 mm.
Fruiting pedicels

18–30 mm, sparsely short villous-glandular or glabrous.

10–30(–45) mm, longer than subtending leaves, minutely stipitate-glandular.
Fruiting calyces

obtriangular to broadly obtriangular or deeply cupulate, inflated, sagittally compressed, (7–)8–12 mm, sparsely short villous-glandular or glabrous, throat not closing, lateral lobes shallowly convex-mucronulate, adaxial ovate with apex rounded.

nodding 45–90º, not red-dotted, broadly elliptic-ovoid, inflated, sagittally compressed, (8–)14–18(–20) mm, glabrous or sparsely stipitate-glandular to hirsutulous, sometimes mixed glandular-hirsutulous, throat closing, adaxial lobe not distinctly longer than abaxial, not falcate.
Capsules

included, (4.5–)5–8 mm.

included, stipitate, 5–7 mm.
Anthers

included, glabrous.

included, glabrous.
2n

= 30.

= 60.

Erythranthe geyeri

Erythranthe cordata
Phenology Flowering May–Aug(–Oct). Flowering (Jan–)Mar–Jun(–Nov).
Habitat Edges of flowing streams, marsh edges, drainage ditches, seepage areas, springs, muddy or moist banks. Springs, seeps, stream edges, muddy banks, flood plains, marshes and swamps, wash bottoms, wet depressions, wet places among boulders.
Elevation 200–2500 m. (700–8200 ft.) (600–)800–2400(–3000) m. ((2000–)2600–7900(–9800) ft.)
Distribution
from FNA
AZ; CO; IA; IL; KS; MI; MN; MO; NE; NM; OK; PA; SD; TX; WI; WY; AB; MB; ON; QC; SK; Mexico (Chihuahua, Coahuila, Distrito Federal, Durango, Hidalgo, Nuevo León, México, Querétaro, San Luis Potosí, Sonora, Veracruz, Zacatecas)
[WildflowerSearch map]
from FNA
AZ; CA; CO; NM; NV; TX; UT
[WildflowerSearch map]
Discussion

Erythranthe geyeri has commonly been regarded as conspecific with E. glabrata (Kunth) G. L. Nesom (as Mimulus glabratus var. jamesii), but typical E. glabrata has a different chromosome number and distinct morphology and its range does not reach the United States. In Mexico, the two species are broadly sympatric without intermediates. An allozyme study of the M. glabratus complex (R. K. Vickery 1990) indicated that the Great Plains populations of E. geyeri are distinct from those in New Mexico and Mexico, corresponding to a difference in pedicel vestiture.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Erythranthe cordata is characterized by its fibrous-rooted habit (annual in duration, without rhizomes but commonly rooting at the proximal nodes), short corollas and autogamous reproduction (anthers and stigma at the same level), closed calyces, sparsely villous-glandular vestiture (lacking hirtellous, eglandular hairs), and stems commonly fistulose in larger plants. The short corollas and other features of autogamous reproduction of E. cordata are diagnostic and prominent. Plants of E. cordata are highly variable in size, from tiny fibrous-rooted plants with nearly filiform stems to much larger individuals with fistulose stems rooting at proximal nodes.

Erythranthe cordata and E. nasuta are sympatric in Arizona, southeastern New Mexico, and southern Utah, and small plants of each species may be similar in aspect, both with cleistogamous flowers and reduced vestiture. Erythranthe nasuta can be recognized by its distal and bracteal leaves with hirtellous to hirsutulous adaxial surfaces; a 10/x lens usually is required to see this feature, and it sometimes is most obvious around the leaf margins.

The common name of Erythranthe cordata alludes to a fancied resemblance of the corollas to the horn of a diminutive trumpet.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 406. FNA vol. 17, p. 422.
Parent taxa Phrymaceae > Erythranthe Phrymaceae > Erythranthe
Sibling taxa
E. acutidens, E. alsinoides, E. ampliata, E. androsacea, E. arenaria, E. arenicola, E. arvensis, E. barbata, E. bicolor, E. brachystylis, E. breviflora, E. breweri, E. caespitosa, E. calcicola, E. calciphila, E. cardinalis, E. carsonensis, E. charlestonensis, E. chinatiensis, E. cinnabarina, E. corallina, E. cordata, E. decora, E. dentata, E. diffusa, E. discolor, E. eastwoodiae, E. erubescens, E. exigua, E. filicaulis, E. filicifolia, E. floribunda, E. gemmipara, E. geniculata, E. glaucescens, E. gracilipes, E. grandis, E. grayi, E. guttata, E. hallii, E. hardhamiae, E. hymenophylla, E. inamoena, E. inconspicua, E. inflatula, E. jungermannioides, E. laciniata, E. latidens, E. lewisii, E. linearifolia, E. marmorata, E. michiganensis, E. microphylla, E. minor, E. montioides, E. moschata, E. nasuta, E. norrisii, E. nudata, E. palmeri, E. pardalis, E. parishii, E. parvula, E. patula, E. percaulis, E. primuloides, E. ptilota, E. pulsiferae, E. purpurea, E. regni, E. rhodopetra, E. rubella, E. scouleri, E. shevockii, E. sierrae, E. suksdorfii, E. taylorii, E. thermalis, E. tilingii, E. trinitiensis, E. unimaculata, E. utahensis, E. verbenacea, E. washingtonensis, E. willisii
E. acutidens, E. alsinoides, E. ampliata, E. androsacea, E. arenaria, E. arenicola, E. arvensis, E. barbata, E. bicolor, E. brachystylis, E. breviflora, E. breweri, E. caespitosa, E. calcicola, E. calciphila, E. cardinalis, E. carsonensis, E. charlestonensis, E. chinatiensis, E. cinnabarina, E. corallina, E. decora, E. dentata, E. diffusa, E. discolor, E. eastwoodiae, E. erubescens, E. exigua, E. filicaulis, E. filicifolia, E. floribunda, E. gemmipara, E. geniculata, E. geyeri, E. glaucescens, E. gracilipes, E. grandis, E. grayi, E. guttata, E. hallii, E. hardhamiae, E. hymenophylla, E. inamoena, E. inconspicua, E. inflatula, E. jungermannioides, E. laciniata, E. latidens, E. lewisii, E. linearifolia, E. marmorata, E. michiganensis, E. microphylla, E. minor, E. montioides, E. moschata, E. nasuta, E. norrisii, E. nudata, E. palmeri, E. pardalis, E. parishii, E. parvula, E. patula, E. percaulis, E. primuloides, E. ptilota, E. pulsiferae, E. purpurea, E. regni, E. rhodopetra, E. rubella, E. scouleri, E. shevockii, E. sierrae, E. suksdorfii, E. taylorii, E. thermalis, E. tilingii, E. trinitiensis, E. unimaculata, E. utahensis, E. verbenacea, E. washingtonensis, E. willisii
Synonyms Mimulus geyeri, M. glabratus var. fremontii, M. glabratus var. jamesii, M. glabratus var. oklahomensis, M. jamesii, M. jamesii var. fremontii Mimulus cordatus, M. maguirei
Name authority (Torrey) G. L. Nesom: Phytoneuron 2012-39: 43. (2012) (Greene) G. L. Nesom: Phytoneuron 2012-39: 43. (2012)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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